In the past few decades, SWOP has become the main reference for the printing and publishing industry. This is due to SWOP's organic integration of far-reaching goals, the dedication of relevant personnel and the willingness of the entire industry to expect progress. The SWOP manual has been revised many times, involving personnel in all aspects of the publication production process, such as advertisers, publishers, printers, advertising agencies, and prepress service providers.
The history of SWOP
In the late 1960s and early 1970s, with the popularization of web offset printing technology and its growing influence on the industry, various printing problems caused by different materials (film and paper) became more and more obvious. The prepress service providers have tried their best to change this phenomenon, but in the absence of any parameter description, they can only judge the correctness of the operation by guessing. The situation is very chaotic and intensifying.
By the end of 1974, a group of industry experts held an informal meeting to discuss whether it is possible to form an association to prepare parameter descriptions for various materials required for rotary offset printing. They plan to invite representatives of relevant departments in the industry to hold a meeting at the beginning of 75, and decide to set up a judging committee to invite all interested organizations to participate. At the same time, an agreed agreement will be reached as an effective parameter standard.
William Sullivan was elected chairman at that meeting until McGraw Hill succeeded him in 1991.
The initial set of parameter descriptions was published in 1975, and the current name (rotary offset printout parameter description version) and acronym (SWOP) were first adopted in 1976. It was later republished in 77, 78, 81, 88 and 93.
From the first publication to the present, the basic characteristic of SWOP parameter description has always been adaptability. The SWOP Review Committee meets regularly to discuss how to change the commercial and technical conditions to ensure the harmonization of parameter standards.
In the version before 1986, the parameter description mainly focused on the control of the materials (film and paper) provided-especially the four-color color separation film and color separation proofs. The 1986 version not only improved the early parameter descriptions, but also provided guidance on the operation of web offset for the first time. During the same period, SWOP parameter descriptions were also used as input parameter descriptions for gravure publishing in collaboration with the American Gravure Association (GAA).
Since 1993, the SWOP parameter description has included the preparation and transmission of printed electronic files in the electronic workflow; more detailed information about digital proofing; in addition, the SWOP application data form has been developed and improved.
In 1988 SWOP merged with the American Printing Technology Association to form a "non-profit" company. The original board of directors consisted of representatives from the American Advertising Agency Association (AAAA), American Magazine Publishers (MPA), International Prepress Association (IPA), American Commercial Printing (ABP), and the American Printing Industry Web Offset Association, as well as the original chairman and The vice chairman is composed. At present, the board of directors includes 6 independent directors, and 6 people have held the position of chairman. ABP has withdrawn from the organization. All participants are voluntary and unpaid.
In 1994, the association officially registered the trademark SWOP®.
SWOP's mission
SWOP's mission is to continuously improve the quality of printed and published products through the setting and modification of parameter standards and allowable tolerances.
The purpose is to provide publication publishers with all the parameter descriptions required in the process of advertising production and editing. Once all relevant personnel have followed these parameter descriptions, printing professionals can complete the copying according to the intentions of advertisers and publishers, greatly reducing the difficulty. Each step in the printing process should be measured and confirmed to determine the quality standards, allowing each operator in the imaging process chain to monitor and improve the production process through statistical methods.
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